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Lilit [14]
3 years ago
5

If R is the midpoint of QS, RS=2X-4, ST=4X-1, and RT=8X-43, find QS

Mathematics
1 answer:
Cloud [144]3 years ago
3 0
RT = RS + ST
8x - 43 = 2x - 4 + 4x - 1
8x - 43 = 6x - 5
8x - 6x = -5 + 43
2x = 38
x = 38/2
x = 19

QS = 2RS = 2(2x-4) = 2(2*19-4) = 2*34 = 68
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Katarina [22]

Answer:  Each screensaver costs $2 and each Otterbox costs $7.

Step-by-step explanation:

Let x = Cost of each screensaver and y = cost of each Otterbox.

As per given, 4x+3y=29       (i)

6x +2y = 26  (ii)

Divide both sides of (i) by 2 and the multiply it by 3 on sides , we get

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Eliminate (i) from (iii) , we get

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Put value of x in (i), we get

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7 0
3 years ago
Woodland Bicycles makes two models of off-road bicycles: the Explorer, which sells for $250, and the Grande Expedition, which se
elena-s [515]

Answer:


Step-by-step explanation:

Let X be number of woodland bicyles and Y grande expedition

Our objective is to maximize profit

Z = 250x+350Y

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(given)

Solution gives negative y. Hence intersecting point is not within constraint.

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4 0
3 years ago
Read 2 more answers
Which one is equivalent to the problem ? please help me!!!
lesya692 [45]

Answer:

B

Step-by-step explanation:

This is a power to a power problem. -3 times 2 equals-6. Usually when a number is raised to a negative power, the number is the denominator over 1...with the exponent in the denominator ad well. 5 to the -6 power is 15,605 which is the same as 1/5 to the 6th power....1/15,605

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If x=7 and y=3 what is the value of x+5y<br><br> i need help
aksik [14]

If x=7 and y=3, then

x+5y=7+5(3)

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So x+5y=22

8 0
3 years ago
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I need help...cause i’m confused
Arisa [49]

the answer is d thats what im choosing because i recall doing a similar problem to this

6 0
3 years ago
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